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Editorial Team
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Asked: 2026-06-18T09:52:43+00:00

I want to use Cobertura code coverage recording in my web application, but can’t

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I want to use Cobertura code coverage recording in my web application, but can’t get it to work. I suspect, the problem is some conflict between Spring or Hibernate and Cobertura since all three use the ASM lib to do their byte code manipulation.

I did the following:

  • I used the Cobertura Ant task to instrument my jars in “WEB-INF/lib” and generated the “cobertura.ser” file
  • I added the “cobertura.jar” to “WEB-INF/lib”
  • I start tomcat providing cobertura file location (net.sourceforge.cobertura.datafile=cobertura.ser)

When I start Tomcat, I get the following error message when the Spring context is initialized:

java.lang.NoSuchMethodException: com.foo.MyClass.setInstance($Proxy28)
  at com.foo.common.runtime.spring.PluginInjector.findBestMatchingMethod(PluginInjector.java:252)
  at com.foo.common.runtime.spring.PluginInjector.invokeMethod(PluginInjector.java:198)
  at com.foo.common.runtime.spring.PluginInjector.afterPropertiesSet(PluginInjector.java:174)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452)

I’m already aware, that the asm.jar that comes with cobertura should not be in the classpath and therefore I only copied cobertura.jar to WEB-INF\lib.

Besides, I also tried Emma and it worked. However, cobertura looks more modern, active (last update from 2010 instead of 2005) and generates nicer reports so I would prefer it over Emma.

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1 Answer

  1. Editorial Team

    I had to make two changes, to make this work:

    1. I had to set proxy-target-class="true" in the Spring configuration, so Spring uses CGLIB to generate proxies instead of using JDK dynamic proxies (see Spring Proxying mechanisms).

    2. I had to set the JVM Parameter -XX:-UseSplitVerifier, which causes the JVM to use the old byte code verifier. This seems to be necessary since Cobertura’s byte code manipulation is incompatible with Java 7.

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